Leveling on uneven ground - best method??

Would appreciate some tips. We like to boon dock and often end up on sites which are not level. Have been using the interlocking "lego type" blocks under the stabilizing jacks. Often we end up with one wheel entirely off the ground in order to get the TM level. Boy!   can it be a challenge to lift the weight of the TM with the stabilizing jacks on the TM's low side. We decided a couple of hydraulic jacks might make it easier. In reading the threads on where to place the jacks, came across this one which makes it sound like what we have been doing is bad for the frame:

http://tretta.hypermart.net/cgi-bin/...345099;start=5

Please share thoughts and experiences.

Betty Ann